Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a6d985f37afbd60…

MALICIOUS

PDF

80.2 KB Created: 2021-05-24 08:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0245214c193fdf0d9299828253d81473 SHA-1: 7d77599a8ebaf93f63ca77846aefd28e7d1f67da SHA-256: 8a6d985f37afbd6075617943201ff5e5da01d388a5370a129e2e325ab3d99680
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains a question about historical events, likely a lure to encourage interaction with embedded links. The presence of external URIs suggests the document is designed to redirect the user to potentially harmful content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cdn-cms.f-static.net/uploads/4480402/normal_6036cb7a3ac6a.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373998/normal_600b4318d9de4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/dN4lCoxrs6M/wb?keyword=how%20did%20lincolnPDF link annotation
    • https://s3.amazonaws.com/kigavanus/daily_themed_crossword_answers_tv_minis.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/jewelers_mutual_insurance_company_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/river_basin_map_of_india.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/cholamandalam_general_insurance_claim_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9c83f27-22d8-4c11-addc-1b38d306b4e9/zirorusegevaxidakuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92aaace3-f31b-4c50-b88d-16a3bb0f0fbc/craftsman_battery_charger_repair.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/pipifivof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b446e6f9-21b8-41ae-9396-70298d8d07a2/avatar_comics_to_read.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b420e0-174a-460e-92a0-13a3f768a107/fegenibavodiwo.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/52759366867.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/glucosamine_chondroitin_msm_liquid_form.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/dedebal.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/patunopabesat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4649a26-7d76-47d4-b918-d8f6eeb168a6/behringer_xenyx_x1204_usb_asio_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/manual_apa_6ta_edicion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90890e10-4f0e-4e54-8626-fc3a51dd40cc/ronijojakibukero.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/44414512818.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/cub_scout_leader_book_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de98e247-82ca-4a4d-b75c-40fd594db421/89574313135.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA46 5296 bytes
SHA-256: 4187ac549de5e9f4929160e1922d856647f3f874206255f9bcd9d0014e742eab
font_01_sfnt_off00010c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7B 10684 bytes
SHA-256: 5ca3f6b98e912f51f3d52173c064c0174a33d50d3e27e8777b8c206495445497

Open this report in the interactive analyzer, or submit your own file for analysis.